Improved clotees-wbissee



@atten tetre gateat @titre WARREN ROWELL, OF NEW YORK, N. Y., ASSIGNOR TO METROPOLITAN WASHING MACHINE COMPANY, OF- MIDDLEFIELD, CONNECTICUT.

Lezerslatent No. 68,576, dated, September 3, 1867.

IMPEOVBD CLOTHES-WRINGER.

TO ALL WHOM IT MAY CONCEBN.

Be it known that I, WARREN ROWELL, of the city and county of New York, and State of New York, have invented certain new and useful improvements in Clothes-Virr-ingers; and I do hereby ldeclare that the following is a full and exact description thereof.

It is common in clothes-wringers to gear the rollers together, so that the turning of one roller shall cause .the other to corespondingly turn, with liberty of the rollers to yield apart by the action 'of springs. A patent issued May 15,1866, on thc application of JameslN. Pease, describes what is known as step-gearing, as so applied. I employ substantially this form of wringer, modified so asA to obtain important advantages over thc construction described in Peases patent.

I will proceed to describe what I consider the best means of carrying out` my invention, and will afterwards designate the points which I believe to be new therein. y

The accompanying drawings form a part 'of this specification.

Figure 1 is a side and Figure 2 an edge view oi' an entire wringer on a scale .halt` siz'c.

Figure 3 represents the gearing ou one shaft, with a portion of the similar gearing on the other shaft, and

Figure is a section on the line S S in iig. 3.

Similar letters of reference indicate like parts in all the iigures.

Therdrawings indicate the novel parts, with so much of the other parts as is necessary tov indicate their relationsthereto.

Contining attention to the gear-wheels, I make the lower and the upper gear-wheels exactly alike, so that a minute description of one is equally descriptive of the other.

A is the innermost and I5 the outermost series ot' teeth, which may be considered each as a complete gearwheel. The two .are cast together, and between them is a ring without gear, indicated b D. The periphery of the ring. D is smooth and exactly concentric with the axis; its diameter is a little less than the true pitchlineof the gear-wheel. Tliehsides or opposite faces of the ring or smooth wheel D, which intervenes between the gear-wheels A and B, are bevelled, as indicated v.by cZ d?, the anglo ot' the inclination being about twelve degrees. I give a corresponding bevel to the corresponding sides or edges ofthe teeth.

When the rollers are geared together by my arrangement, and all is in working order, the bevelled edges a b, of the gear-wheels A B, apply to or against the sides dl d2 ot' the smooth ring D, on the opposite roller, and theYcorrespondingly-bcveiled edges of the teeth on the other roller apply against the bcvelled faces .072*4 d2 ot this ring D. When, from any cause, the rollers tend to approach1 too closely together, the points of the-l teeth do not rub against the bottoms of the cavities opposite; but the peripheries of the respective rings D come in contact, each with. the other, and avoid all friction. The bevelling reprcscntcd cffectually avoids all risk of the corners ofthe teeth coming in contact with theperiplicriesoi` the rings D.

I have discovcredthat by reducing the number oithe teeth in the wheels A and B, arranged as specified, andcorrespondingly increasing the spaces between;

increase the distance to which the rollers may be allowed to separate audapproach without involvingany cor responding evil. `'I hc drawings represent the best construction andproporticns. I prefer seven teeth, but can operate successfully with six. In laying out the form of these'teeth I employ two pitch-circles, M and N, striking the points of the teeth from thcoutcr circle M, and the roots of the teeth from the inner circle N. l',Ihe mode of laying out this gear will be readily undcrstoodfrom the drawings by those accustomed to laying out gear.

In the Pease patent, above rcfcrretlto, andin all the examples known to me, eight teeth have been employed. By reducing the number,and increasing their length and distance, or pitch, as described, I increase the range through which the rollers may approach or recede at leastl twenty per cent. I am able by my invention to allow ordinary rollers, two inches in diameter, to approach and recede about three-fourths ci an inch. This is an extent which has never before been possible, except by means of circuitous and complicated connections. This part of thy-invention, the reducing the number and increasing the size of the teeth,

in connection with step-gear, may be applied with success in cases wlrcro' there isnoring D, or any equivalent e teeth'-,an d the length of the teeth, I can materially` therefor. Thus, for examplehin ease the wheels A and B are widely separated, and placedat opposite ends-of the shaft, so long as they are fixed, with the teeth ofen'e opposite the spaces between the teeth of the other, on the same shaft, no matter how widely apart theyV may be, or what, if anything, is between them, the reduction of the number and the increase in the length of the teeth will give an important advantage, as described.

`Anether and important advantage, obtained by reducing the number of teeth and enlarging the spaces between them, is the-increased facility of casting them, by reason of the greater body of sand-which is left' betweenthe teeth in the mould. The diculty ordinarily experienced in moulding` the patterns is thus greatly reduced, if not'wholly ebviatcd.

My invention is capable of various modifications without losing all the advantages thereof. By constructing the ring D in one casting with the gears or toothed wheels A and B, I support the teeth of A and B very effectually, and at the same time form a bearing-wheel bythe periphery of the ring D. In other words I cause the ring D, thus east in one with the other parts, to perform the several distinct functions of a bearingnvheel to tread on the corresponding wheel, and thus prevent the teeth from meshing too closely together, and also of strengthening the teeth ofthe gear on each vside,as also of" usefully resisting under some circumstances the tendency of the rollers to move endwise on each other. 'lhe benefit of some portion of my invention may, however, be realized bystrcngthening the teeth, by'conneeting the teeth of one setto the teeth of the opposite set byibranches or arms extending across, even if the periphery were not adapted to serve as a bearing-wheel. And again, the advantage of the bearing-wheel so situated might be obtained by introducing a ring of any suitable material' to form the proper tread on the periphery of my wheel D, without connecting the same so as to support the teeth ofthe gears thereby. .I can, for example, cast the wheels A and B in two separate pieces, and apply a separate smooth wheel between them. I much prefer the construction herein described.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Pat-ent, is:

as follows:

number of the teeth, and increasing the. pitch thereof, substantially in the proportion, and so as to accomplish the purposes hereinset forth.

2. I claim, in the manufacture of step-gear cast in pairs, the formation of a connection or support between the teeth to strengthen them, substantially as herein set forth.

3. I claim a ring, D, between the gears A B, arranged substantially as described, so as to prevent them 'from meshing deeper than is desired, as herein set forth.

- 4. I claim, in the manufacture of step-gears, when east double, so constructing the ring D, by casting it in, one with the gears, that it lshall at the same time strongly support the teeth, and prevent the gears from work` ing deeper than desired at the nearest approach of the rolls, all substantially as and for the purpose'h'erein set forth.

5. I claim hevelling the faces d1 di of the ring D, and the corresponding faces of the teeth which come in Acontact; therewith, substantially asi-and for the purposes herein set forth.

In witness whereof I have hereunto set my name in the presence of two subscribing witnesses. t

WARREN ROWELL.

Witnesses:

G. C. Lrvrucs, W. C. Dur. 

